The mini system looks and sounds great and built-in Bluetooth allows wireless streaming from smart phone, tablet or personal computer. The CS-355's front-panel USB port plays MP3 and AAC stored in an iPod/iPhone, and MP3, WMA, AAC, and FLAC audio files stored on a flash-memory device. Use the system's own remote for track selection and playback. Your music will sound much cleaner and clearer as the audio signal is transported in digital -rather than analog- form through the direct digital connection. wo big 10 cm cone woofers drive a deep, clear mid-range, while a pair of balanced-dome tweeters pick out and enhance the details. The rounded cabinets have subtly angled sides to protect the integrity of sound waves. The CS-355's digital amplifier circuitry extracts a noise-free signal from digital audio sources. Whether it's on a standard CD or in a compressed MP3 file stored on CD or USB, or music streamed from your mobile device, your music will sound clearer than ever. The CS-355 provides room-filling power that belies its modest size.